Doors and windows just stopped working..

[Jhonno]

Busted the Cerb out for the first time in a while today.. Was going fine till I pulled up and went to get out and the doors wouldn't open on the buttons. Windows were not working either. Used the emergency levers, and the doors/windows came back to life.

The window buttons had been a little hit and miss for a while, but I thought it was the buttons..

Now the doors and windows are completely dead, and interior lights don't come on. The windows raised themselves up at some point and have stayed there.

Tried the disconnect the module trick with no luck.. Could this be reed switch failure? The passenger's door has been a bit temperamental for raising/lowering for a bit..

[Jhonno]

When the windows were playing up, if you held the button pressed for long enough, they would work, it was always up only.

The exterior door pop isolator switch is going a little haywire and the boot doesn't work either now.

[Jhonno]

I replaced the door connections whilst it was off the road..

The complete ans utter failure of everything door/window related did make me think control box.. Just not 100% what reed failure might show as.

[Jhonno]

Unplugged it a few times yesterday..

[Jhonno]

Sounds like something the missus might be jealous of...

Going to check fuses now as I tuck her up in the garage.

[Jhonno]

I am wondering if I have upset her somehow.. I let the missus have a drive yesterday?! Maybe that was it..

Anyway... Battery was flat.. Few cranks and then click click click. I then spotted the headlights were on by themselves (switched off, no rear lights on). Doors etc still dead. No fuses blown that I can see. Jump it off the daily, 13.9v showing at idle so it is charging, did 200 miles in it yesterday. Had to pull the headlight control box plug to turn the lights off.

Big fuse is new.

[Jhonno]

Anyone..? Seems like their may be a bigger issue? Or just a flat battery thing?

[Jhonno]

I am suspecting an electrical fault.. I think. It started fine all day Sat. Whilst I haven't been using it, it is sat on a trickle charger maintaining the battery so that should be all good still.

[Jhonno]

My big fuse is a brand new 125amp job. I did wonder if the headlights was a battery thing.. Will replace it and see what is still not working.

What flavour of battery is in favour currently?!

[Jhonno]

Terminals the wrong way round would set off my OCD tendancies sadly..

[Jhonno]

gruffalo said:

I am not sure why people have batteries that go flat all the time, I leave mine weeks at a time and she still starts, a month parked on the drive is not uncommon.

All I can think is there is some underlying fault that needs sorting that I am lucky enough for my car not to exibit.

My Cerb is kept garaged and on a trickle charger as well..

[Jhonno]

Just been out to it.. One of the connector plugs was almost hot to touch!

J48/ECU connector 4 on the wiring diagram.. This would explain the flat battery.. What might be causing this? A short? Broken switch somewhere? Burnt out motor?

[Jhonno]

I have now disconnected it and it has returned to a normal temperature btw.

[Jhonno]

This one..

[Jhonno]

Any ideas anyone? Seems the windows are trying to draw current even with everything off..? Not being lazy, just not got time for spending time problem solving atm.. Not going to hand it over to someone either..

Just can't get my head round why everything has died, other than their being something up with the ecu itself.. Will check that reed switches when I get a chance. Alarm is new and works fine.

[Jhonno]

Cheers Tim..

Will have to get some time to get the door card off.. It has been garaged and not seen water other than being washed.. (Could well be of course).

The connector was hot after it been sat for a few days.. So no use. Does seem like a possible short. Although it went from initimitant to dead in an afternoon.

[Jhonno]

Just had a spare 20mins, so popped out to the Cerb with the voltmeter in hand. Plugged J48 back in and wires quickly got hot again. I am seeing 12v on A2 [LH Window 1], which makes me think short or switch..? Nothing works still.

Next free 20mins I'll get the door card off..

[Jhonno]

Hmm.. On thinking about it.. Switch seems less likely as surely the position switch would stop it drawing current? So.. Pretty much leaves a short, probably in the connectors I didn't replace ha.

[Jhonno]

Just remembered Tim's post in here..

Trying to jump windows off the 12v feed (there is 12v there), getting nothing. Module is unplugged if that changes anything? I don't think it should for just jumping 12v?

[Jhonno]

I already replaced all the connector in the driver's door.. The passenger ones seem fine, much better than the old driver's side ones. I think this and the complete failure leads me away from connector issues.

I will plug the box back in and retry jumping them again and go from there.